Tool for



(Model.)

C. GALLAHAN TOOL POR APPLYING GOUPLINGS T0 HOSE. No. 389,441. Patented Sept. 11, 1888.

has/Momeyif N. PETERS. Phnlo-Limagmphnr, washington. D. C.

CORNELIUS CALLAHAN, OF BOSTON, MASSACHUSETTS, ASSIGNOR IO THE CORNELTUS OALLAHAN COMPANY, OF SAME PLACE.

TOOL FOR APPLYlNG COUPLINGS TO HOSE.

SPECIFICATION forming part o Letters Patent No. 389,441, dated September 1l, 1888.

(Modell To all whom it may concern.-

Be it known that I, CORNELIUS CALLAHAN, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Tools for Applying Oouplings to Hose, of which the following is a clear and full description, reference being` had to the accompanying drawings, making a part of this specification, in which- Figure 1 represents a top view of my improved tool. Fig. 2 is a vertical section of the same through the line X X of Fig. l, with its manner of application to a hose-coupling. Fig. 3 is a section of a coupling, showing the clampingring in place.

My present invention relates to a tool for readily applying couplings to hydraulic hose; and it consists in the combination of devices hereinafter explained and claimed.

To enable others skilled in the art to construct and use my invention, I will now proceed to describe the exact manner in which I have carried it out.

Referring to the drawings, A represents the outer easing of my improved tool, provided on its lower inner periphery with a female screw, a, for a short distance-say about half an inch or less-to dt on the male screw b on the coupling-seetion B, as shown in Fig. 1. Across the top of the casing A is bolted the metal block C, through which loosely passes the central screw, O, provided with gearingDtbrrevolving the nuts (Z (Z, by which the side screws, E, are evenly raised or lowered. To the lower end of these side screws I attach the follower c, in the form ofa flat ring,litting snugly within the casing A, and which is adapted to belowered by the screws E until it reaches the interior shoulder, F, immediately above the female screw a. rlhis shoulder arrests the downward movement of the follower when its proper function has been completed.

A hollow plug, H, having a central threaded opening, is adapted to be screwed upon the central screw, C, and over the said plug an internal ring, g, is slipped, so that it may be operated upon by the follower-ring, as I shall hereinafter fully describe.

The operation of this tool is as follows; First screw of the binder, as shown in Fig. 2. Now

it will be observed that when the central screw is turned it operates the side screws and causes the follower-ring to move toward the hollow plug H, the said plug turning with the screw. When the follower-ring comes against the face of the plug, the latter and the follower-ring are to all practical purposes locked together,

andthe continued rotation of the screw C', t

which is provided with left -hand threads, causes the said plug to commence to unscrew therefrom. As the plug begins to unscrew or work off the central screw, C', it is also caused to move downward into the adjacent coupling` section. At the same time the followerring, which is immediately behind the plug and internal ring, g, bears against said internal ring to force it downward with theplug H into the coupling section. By the time the follower'- ring reaches the limit of its movement, or, in other words, when it strikes the shoulderF on the inside of the casing A, thehollow plug and internal ring, g, will have been forced into the couplingseetion. The plug H is now readily detached from the screw O by unscrewing the casing A from the coupling-section, and said plug may be removed from the coupling-section by means of a suitable tool, therebyleav ing the internal ring iirmly seated in said section, with its threaded end projecting beyond the coupling, as shown more particularly in Fig. 3.

It is important to have the threads on the central screw that engages the plug and the two connected with the follower-ring of different pitches-say right and left-when I oper ate all three by the turning of the central screw. I could reach the same result with three independent screws, but prefer geared ones, as being quicker and carrying the ring down evenly.

Instead of the exact form of the screws I have described and shown, it is obvious I might employ any other suitable construction of screws and nuts to cause the downward movement of the follower without departing from the spirit of my invention.

The ring-direotor serves also as a wedge to hold the hose in place between it and the coupling-ring while the inner ringis being inserted.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a tool for applying couplings to hose, the combination, with the coupling-section B, the plug H, and The internal ring, g, of the casing A, the internal follower, e, the screws E, and the centrally-placed screw C', engaging the plug and operating the screws E in unison, substantially as described.

2. In a tool for applying couplings to hose, the combination,with thecoupling-section, the

hollow plug, and internal ring, of the casing adapted to be screwed upon the coupling-section and provided with au internal shoulder or stop, F, the follower adapted to bear against said ring, the screws E. secured to said follower, the central screw, and suitable gearing between said central screw and the screws E, whereby said screws move-iu unison and operate the follower, substantiall y as described.

3. The coupling-section, the casing A, the plug H, and theinternal ring, g, in combination with the follower adapted to bear upon said ring, the screws E, the nuts d thereon, the central screw, C', and gearing between said screw and the nuts d, whereby the side screws are evenly raised and lowered, substantially as and for the purpose described.

CORNELIUS CALLAHAN. Witnesses:

W. J. WEBBER, l. F. PRESTON. 

